I have a problem with the port locations. The following is an excerpt of the published WSDL for WSRP:

<wsdl:import location="http://192.168.15.4:8080/portal-wsrp/MarkupService?wsdl&resource=wsrp_v1_bindings.wsdl" namespace="urn:oasis:names:tc:wsrp:v1:bind"/>
<wsdl:service name="WSRPService">
<wsdl:port binding="bind:WSRP_v1_PortletManagement_Binding_SOAP" name="WSRPPortletManagementService">
<soap:address location="http://telemachus.local:8080/portal-wsrp/PortletManagementService"/>
</wsdl:port>

Note that the WSDL location uses the IP address whereas the port location uses the Bonjour/ZeroConf name for my system instead. However, this name is not understood by systems which don't support ZeroConf